diff --git a/site_ansto/instrument/bilby/bilby_configuration.tcl b/site_ansto/instrument/bilby/bilby_configuration.tcl
index 22553f05..c0dcfd24 100644
--- a/site_ansto/instrument/bilby/bilby_configuration.tcl
+++ b/site_ansto/instrument/bilby/bilby_configuration.tcl
@@ -52,6 +52,46 @@ fileeval $cfPath(commands)/hvcommands.tcl
 
 source gumxml.tcl
 
+# Define 'enable' and 'disable' commands to allow or prevent control of some
+# devices.
+proc dev_control {dev allow} {
+  switch $dev {
+    "roughing" {
+      if {$allow} {
+        set ::scobj::shutters::rough_slits_enabled 1
+      } else {
+        set ::scobj::shutters::rough_slits_enabled 0
+      }
+    }
+    "ss1" {
+      if {$allow} {
+        ss1d fixed -1
+        ss1l fixed -1
+        ss1r fixed -1
+        ss1u fixed -1
+      } else {
+        ss1d fixed 1
+        ss1l fixed 1
+        ss1r fixed 1
+        ss1u fixed 1
+      }
+    }
+    "help" {
+      clientput "Valid devices are roughing, ss1"
+    }
+    default {
+      error "You cannot disable or enable control on $dev. Call with 'help' to get a list."
+    }
+  }
+}
+proc enable {dev} {
+  dev_control $dev 1
+}
+publish enable mugger
+proc disable {dev} {
+  dev_control $dev 0
+}
+publish disable mugger
 ::utility::mkVar ::anticollider::protect_detector text manager protect_detector false detector true false
 ::anticollider::protect_detector "true"